TechCrunch
and a
few other people noticed this list of 370 passwords that
Twitter bans its members from using when they sign up for new
accounts. They range from the obvious -- "password," "twitter,"
etc. -- to the obscene and bizarre.

Why ban them? They're very easy for humans and brute-force
hacking scripts to figure out, making it easier for people to get
access to your account. On Twitter, this can be embarrassing. On
other sites, this can be very costly.

A good, strong password is long, has multiple numbers and
letters, mixes upper and lower case, and includes special
characters like ! or &. Different sites use different
security techniques, and might not allow some characters. But in
general, the harder to remember, the better! (Which doesn't help
when you forget your password, of course.)